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Table 1: Summary of the results of the quantitative analysis^{^a}
LEA Conventional Roadmap Material-Specific Roadmap P Value
2.0 mm 
 Onyx 18 11.53 (SD, 0.57) 77.09 (SD, 3.23) P < .001
 Squid 18 6.43 (SD, 0.40) 46.97 (SD, 1.42) P < .001
 PHIL 25% 4.91 (SD, 0.47) 20.69 (SD, 1.51) P < .001
 n-BCA/iodized oil 9.50 (SD, 0.42) 33.46 (SD, 1.66) P < .001
 Contrast medium 8.39 (SD, 0.96) 42.72 (SD, 2.76) NA
 Saline 0.08 (SD, 0.06) NA
1.5 mm
 Onyx 18 10.17 (SD, 0.44) 66.06 (SD, 5.97) P < .001
 Squid 18 5.77 (SD, 0.50) 41.52 (SD, 4.00) P < .001
 PHIL 25% 3.41 (SD, 0.52) 15.54 (SD, 1.63) P < .001
 n-BCA/iodized oil 6.96 (SD, 0.46) 25.44 (SD, 1.06) P < .001
 Contrast medium 7.75 (SD, 1.17) 34.01 (SD, 3.21) NA
 Saline 0.06 (SD, 0.03) NA
1.0 mm
 Onyx 18 5.69 (SD, 0.85) 47.18 (SD, 5.72) P < .001
 Squid 18 3.20 (SD, 0.53) 30.92 (SD, 3.00) P < .001
 PHIL 25% 1.97 (SD, 0.39) 10.47 (SD, 0.62) P < .001
 n-BCA/iodized oil 2.86 (SD, 0.52) 15.77 (SD, 0.94) P < .001
 Contrast medium 4.12 (SD, 0.89) 20.88 (SD, 2.64) NA
 Saline 0.10 (SD, 0.07) NA
0.5 mm
 Onyx 18 2.36 (SD, 0.83) 30.27 (SD, 6.78) P < .001
 Squid 18 1.91 (SD, 0.42) 17.40 (SD, 3.89) P < .001
 PHIL 25% 0.733 (SD, 0.19) 3.61 (SD, 0.67) P < .001
 n-BCA/iodized oil 0.97 (SD, 0.28) 5.16 (SD, 1.01) P < .001
 Contrast medium 1.34 (SD, 0.28) 6.35 (SD, 1.27) NA
 Saline 0.14 (SD, 0.06) NA
Note:—NA indicates that no P value is available because the contrast medium and saline only served as a reference with no material-specific roadmap mode available for saline.
↵a Results are mean CNR.